PROBLEM TO BE SOLVED: To provide an estrogen-like active agent having high activity compared to the conventional one, in other words, a skin external preparation which excels in a rough dry skin-improving effect, a wrinkle-preventing/improving effect, a skin whitening effect, excels in a use feeling such as skin agreeability and non-stickiness after use, and excels in stability with time.SOLUTION: The estrogen-like active agent includes an extract of a Vaccinium vitis-idaea fruit as an active ingredient. The skin external preparation contains 0.0001-5 mass% of an extract of a Vaccinium vitis-idaea fruit as a dried residue.COPYRIGHT: (C)2012,JPO&INPIT【課題】従来のものに比べ高活性なエストロゲン様作用剤の提供。肌荒れ改善効果、シワ防止・改善効果、美肌効果に優れ、かつ肌のなじみ性、使用後のべたつきが無い等の使用感にも優れるとともに、経時安定性にも優れる皮膚外用剤の提供。【解決手段】エストロゲン様作用剤は、ツツジ科スノキ属のコケモモ(Vaccinium vitis-idaea )の果実の抽出物を有効成分として含有する。皮膚外用剤は、上記コケモモの果実の抽出物を乾燥残留物として0.0001~5質量%含有する。【選択図】なし